RT Journal Article T1 New first integral for twisting type-N vacuum gravitation fields with two non-commuting Killing vectors A1 Chinea Trujillo, Francisco Javier AB A new first integral for the equations corresponding to twisting type-N vacuum gravitational fields with two non-commuting Kilting vectors is introduced. A new reduction of the problem to a complex second-order ordinary differential equation is given. Alternatively, the mentioned first integral can be used in order to provide a first integral of the second-order complex equation introduced in a previous treatment of the problem. PB IOP Publishing Ltd SN 0264-9381 YR 1998 FD 1998-02 LK https://hdl.handle.net/20.500.14352/59446 UL https://hdl.handle.net/20.500.14352/59446 LA eng NO © 1998 IOP Publishing Ltd.Financial support by Direccion General de Enseñánza Superior, Spain (Project PB95-0371) is gratefully acknowledged. NO Direccion General de Enseñánza Superior, Spain DS Docta Complutense RD 21 abr 2025